American Larry Brown and Anita Hansen, from Denmark, were strangers who met on the Eiffel Tower in 1989 and became friends, ...

This rocket was flying for the 26th time, as SpaceX continues to push reusability to new records.Start the day smarter. Get all the news you need in your inbox each morning. SpaceX video ...

The iridescent cloud reveals new clues about ice formation in the Martian atmosphere (no little green men, sorry).

NASA’s Curiosity rover captured stunning images of Martian twilight clouds, revealing iridescent dry ice formations on Mars.

The Mars Express orbiter has kept an eye on an elongated cloud above Arsia Mons volcano for the last few years. The cloud is reoccurring, grows incredibly fast and is "made up of water ice," according ...